CUBE55—two pendahedra, one hexahedron

element type nodes
1 55 1 2 4 5 6 8 17 21 20 22 23 25 26 30 29
2 55 2 3 4 6 7 8 18 19 21 23 24 25 27 28 30
3 56 9 10 11 12 13 14 15 16 31 32 33 34 35 36 37 38 39 40 41 42